WO2001022893A1 - A surgical screw system and related methods - Google Patents
A surgical screw system and related methods Download PDFInfo
- Publication number
- WO2001022893A1 WO2001022893A1 PCT/US2000/041015 US0041015W WO0122893A1 WO 2001022893 A1 WO2001022893 A1 WO 2001022893A1 US 0041015 W US0041015 W US 0041015W WO 0122893 A1 WO0122893 A1 WO 0122893A1
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- WIPO (PCT)
- Prior art keywords
- receiver member
- head
- screw member
- screw
- bore
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/7037—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
Definitions
- the present invention relates to a surgical screw system for use with implantation rods, and related methods of using a surgical screw system with implantation rods.
- the bones and connective tissue of an adult human spinal column consists of more than 20 discrete bones coupled sequentially to one another by a tri-joint complex.
- the complex consists of an anterior disc and two posterior facet joints.
- the anterior discs of adjacent bones are cushioned by cartilage spacers referred to as intervertebral discs.
- the over 20 bones of the spinal column are anatomically categorized as one of four classification: cervical, thoracic, lumbar, or sacral.
- the cervical portion of the spine which comprises the top of the spine up to the base of the skull, includes the first 7 vertebrae.
- the intermediate 12 bones are thoracic vertebrae, and connect to the lower spine comprising the 5 lumbar vertebrae.
- the base of the spine is a sacral bones (including the coccyx).
- the spinal column of bones is high complex in that it includes the over 20 bones coupled to one another, housing and protecting critical elements of the nervous system having innumerable peripheral nerves and circulatory bodies in close proximity.
- the spine is a highly flexible structure, capable of a high degree of curvature and twist in nearly every direction. Genetic or developmental irregularities, trauma, chronic stress, tumors and disease, however, can result in spinal pathologies which either limit this range of motion, or which threatens the critical elements of the nervous system housed within the spinal column.
- a variety of systems have been disclosed in the art which achieve this immobilization by implanting artificial assemblies in or on the spinal column. These assemblies may be classified as anterior posterior or lateral implants.
- Posterior implants generally comprise pairs of rods, which are aligned along the axis which the bones are to be disposed, and which are then attached to the spinal column by either hooks which couple to the lamina or attach to the transverse processes, or by screws which are inserted through the pedicles. It is desirable, during surgical implantation of such orthopedic devices, to have a multi- axial screw system that provides a consistent lock as well as reliability, durability, and ease of installment.
- the present invention relates to a surgical screw system for use with implantation rods.
- the system comprises a screw member, a receiver member, a pressure cap and a locking device.
- the screw member has a head and shaft; the head of the screw member has a spherical undersurface and a conical tapered recess.
- the receiver member has upper and lower portions, a u-shaped receiving channel and an axial bore.
- the u-shaped channel has two lateral legs at the upper portion of the receiver member and forms an opening leading to the axial bore; the conical surface has a diameter larger than the shaft of the screw member and a diameter smaller than the head of the screw member.
- the conical surface forms a support upon which the spherical undersurface of the head of the screw member rests when the screw member is guided through the bore to the lower portion of the receiver member.
- the pressure cap of the system is positioned within the axial bore of the receiver member and is situated upon the head of the screw member; the pressure cap has upper and lower portions and the upper portion of the cap comprises a concave radial portion upon which the rod is positioned, and the lower portion comprises a spherical portion positioned upon the conical tapered recess of the head of the screw member.
- the locking device is designed for securing the rod within the u-shaped channel of the receiver member by applying a tightening torque upon the rod when positioned within the opening and the bore near the upper portion of the receiver member.
- the undersurface of the head and the shaft of the screw member comprise threaded portions.
- the legs of the u-shaped channel has internal threads and the threads may be buttress threads.
- the conical tapered recess of the head of the screw member comprises an aperture coaxial to the shaft and designed to engage a fastening device.
- the pressure cap further comprises an axial bore extending from the upper through lower ends of the cap; the bore of the pressure cap corresponds to the aperture of the head of the screw member allowing an access for the fastening device.
- the receiver member further comprises a rectangular key- locking segment and a cylindrical undercut situated adjacent to the bore.
- the pressure cap further comprises a cylindrical undercut and a retaining ring; the key-locking segment and the undercut of the receiver member are designed to engage the undercut and the ring of the pressure cap to form an anti-rotation and locking mechanism.
- the legs of the u-shaped channel of the receiver member further comprises a threaded portion and the locking device further comprises a corresponding threaded portion.
- the threaded portions are buttress threads.
- the locking device is a set screw.
- the locking device is a top locking nut.
- the aperture of the head of the screw member is hexagon-shaped and the fastening device is a hexagon socket screw key.
- the axial bore of the receiver member comprises a plurality of slots descending down the legs of the u-shaped channel and the locking device comprises at least one protrusion designed to engage at least one of the slots on the legs of the u-shaped channel of the receiver member to secure the locking device within the receiver member.
- the locking device comprises a top and bottom portion; the bottom portion has a convex recess designed for contacting the curvature of the rod.
- the screw member, receiver member and the pressure cap may be factory set. The operating physician just needs to attach the screw member to a bone, place the implantation rod into the receiver member and secure the rod into the receiver member using the locking device.
- the present invention relates to a surgical screw and rod implantation system, comprising at least one rod and at least one surgical screw apparatus.
- the apparatus comprises a screw member having a head and a shaft, the head of the screw member has a spherical undersurface and a conical tapered recess; a receiver member has upper and lower portions, a u-shaped rod receiving channel, and an axial bore; the u-shaped channel has two lateral legs at the upper portion of the receiver member and forms an opening leading to the axial bore; the axial bore near the lower portion of the receiver member includes an inwardly conical tapered surface, the conical tapered surface has a diameter larger than the shaft of the screw member and a diameter smaller than the head of the screw member thereby forming a support upon which the spherical undersurface of the head of the screw member rests when the screw member is guided through the bore to the lower portion of the receiver member; a pressure cap positioned within the axial bore of the receiver member and situated upon the head of the screw member;
- the undersurface of the head and the shaft of the screw member comprise threaded portions.
- the conical tapered recess of the head of the screw member comprises an aperture coaxial to the shaft and designed to engage a fastening device.
- the pressure cap further comprises an axial bore extending from the upper through the lower ends of the aperture of the head of the screw member allowing access for the fastening device.
- the receiver member further comprises a rectangular key- locking segment and a cylindrical undercut situated adjacent to the bore; the pressure cap further comprises a cylindrical undercut and a retaining ring.
- the key- locking segment and the undercut of the receiver member are designed to engage the undercut and the ring of the cap to form an anti-rotation and locking mechanism.
- the axial bore of the receiver member further comprises a threaded portion and the locking device further comprises a corresponding threaded portion.
- the axial bore of the receiver member comprises a plurality of slots descending down the legs of the u-shaped channel and the locking device comprising at least one protrusion designed to engage at least one of the slots of the receiver member to secure the locking device within the receiver member.
- the locking device comprises a top and bottom portion; the bottom portion has a convex recess designed for contacting the curvature of the rod.
- the present invention relates to a method of using a surgical screw system with an implantation rod.
- the method comprises: providing a screw member, a receiver member and a pressure cap; the screw member having a head and a shaft, the head of the screw member having a spherical undersurface and a conical tapered recess; the receiver member has an upper and lower portion, a u-shaped rod receiving channel and an axial bore; the u-shaped rod receiving channel has two lateral legs at the upper portion of the receiver member and forms an opening leading to the axial bore; the axial bore near the lower portion of the receiver member including an inwardly conical tapered surface; the conical surface has a diameter larger than the shaft of the screw member and a diameter smaller than the head of the screw member; the pressure cap has upper and lower ends, the upper end comprising a concave radial portion and the lower end comprising a spherical portion; inserting the screw member into the bore of the receiver member and positioning the screw member toward the lower portion of the receiver
- the head and the shaft of the screw member comprise threaded portions.
- the conical tapered recess of the head of the screw member comprises an aperture coaxial to the shaft and designed to engage a fastening device; the cap further comprises an axial bore extending from the upper through lower end of the cap, the bore of the cap corresponding to the aperture of the head of the screw member allowing access for the fastening device.
- the screw member is screwed into a spinal column using a fastening device and in another embodiment, the fastening device is a hexagon socket screw key.
- the pressure cap is locked within the bore of the receiver member prior to the screw member being screwed into the spinal column.
- the receiver member further comprises a rectangular key-locking segment and a cylindrical undercut situated adjacent to the bore; the pressure cap further comprising a cylindrical undercut and a retaining ring; the key-locking segment and the undercut of the receiver member being designed to engage the undercut and the ring of the cap to form an anti- rotation and locking mechanism.
- the legs of the u-shaped channel of the receiver member further comprise a threaded portion and the locking-device further comprises a corresponding threaded portion.
- the locking device is a set screw and in another embodiment, the locking device is a top locking nut.
- the axial bore of the receiver member comprises a plurality of slots descending down the legs of the u-shaped channel and the locking device comprises at least one protrusion designed to engage at least one of the slots of the legs of the u-shaped channel of the receiver member to secure the locking device with the receiver member.
- the locking device comprises a top and bottom portion; the bottom portion having a convex recess designed for contacting the curvature of the rod.
- the convex recess of the locking device is aligned with the curvature of the rod before locking the locking device within the receiver member.
- FIGURE 1 is a cross sectional view of the surgical screw system of the present invention
- FIGURE 2 is a perspective view of the components of the surgical screw system
- FIGURE 3 is a perspective view of the surgical screw system and the rod unassembled
- FIGURE 4 is a perspective view of the surgical screw system and the rod assembled.
- the surgical screw system 50 comprises a screw member 1 having a head 14 and shaft 15.
- the head 14 has spherical undersurface 24 and a conical tapered recess 10.
- the system 50 further comprises a receiver member 3 having upper and lower portions, 3 a and 3b respectively, a u-shaped rod receiving channel 12, and an axial bore 16.
- the u-shaped channel 12 has two lateral legs, 12a and 12b respectively, at the upper portion 3 a of the receiver member 3 and forms an opening leading to the axial bore 16.
- the axial bore 16 near the lower portion 3b of the receiver member 3 includes an inwardly conical tapered surface 5.
- the conical surface 5 has a diameter larger than the shaft 15 of the screw member 1 and a diameter smaller than the head 14 of the screw member 1.
- the conical surface 5 forms a support upon which the spherical undersurface 24 of the head 14 rests when the when the screw member 1 is guided through the bore 16 to the lower portion 3b of the receiver member 3.
- the system 50 also comprises a pressure cap 7 which is positioned with the axial bore 16 of the receiver member 3 and situated upon the head 14 of the screw member 1.
- the pressure cap 7 has upper and lower ends, 7a and 7b respectively; the upper end 7a of the pressure cap 7 comprises a concave radial portion 9 upon which a rod 8 is positioned, and the lower end 7b of the pressure cap 7 comprises a spherical portion 20 situated upon the conical tapered recess 10 of the head 14 of the screw member 1.
- the system 50 further comprises a locking device 1 1 for securing the rod 8 within the u-shaped channel 12 of the receiver member 3 by applying a tightening torque upon the rod 8 when positioned within the opening and bore
- the undersurface 24 of the head 14 and the shaft 15 of the screw member 1 can comprise threaded portions 33.
- the conical tapered recess 10 of the screw member 1 comprises an aperture 6 coaxial to the shaft 15 and designed to engage a fastening device.
- the pressure cap 7 further comprises a axial bore 23 extending from the upper end 7a to the lower end 7b of the pressure cap 7. The bore 23 of the pressure cap 7 corresponds to the aperture 6 of the head 14 of the screw member 1 allowing access for the fastening device.
- the receiver member 3 also further comprises a rectangular key-locking segment 18 and a cylindrical undercut 99 situated adjacent to the bore 16.
- the pressure cap 7 further comprises a cylindrical undercut 98 and a retaining ring 97. The key-locking segment 18 and the undercut
- the receiver member 3 are designed to engage the undercut 98 and the ring 97 of the pressure cap 7 to form an anti-rotation and locking mechanism.
- the axial bore 16 of the receiver member 3 further comprises threaded portions 42 and the locking device comprises corresponding threaded portions 41.
- the head 14 of the screw member 1 is hexagon-shaped and the fastening device is a hexagon socket screw key.
- the locking mechanism of the present invention provides a more consistent locking system.
- the convex spherical/concave conical taper interface of the present invention occurs at two instances: (a) the spherical undersurface 24 of the head 14 of the screw member 1 and the conical tapered recess surface 5 of the receiver member 3 and (b) the spherical portion 20 of the pressure cap 7 and the conical tapered recess 10 of the head 14 of the screw member 1.
- the convex spherical/concave conical taper interface at each junction of the locking mechanism of the present invention are wedge jointly. This wedge joint is achieved when a changing force is applied and the convex spherical feature is compressed into the concave conical taper feature. At the periphery point contacts and at the component interfaces, a resultant hoop stress is created.
- This hoop stress has a wedging effect at the component interfaces, thereby consistently locking the device in position.
- the present invention also provides a mechanical leverage.
- the wedging effect and mechanical leverage provides for a consistently robust locking mechanism. The consistency is based upon the reproducible nature of the tapered nest geometry. Even when considering tolerance, the taper lock wedging effect and leverage position will always be consistently achieved. If any tolerance variation is encountered, this will translate into a slight variation of height in the longitudinal axis of the assembly which is negligible as to the function of the locking mechanism and the final device assembly.
- FIG. 2 depicts a perspective view of the components of the surgical screw system 50 of the present invention.
- the system 50 comprises a screw member 1, a receiver member 3, a pressure cap 7 and a locking device.
- the screw member 1 comprises a head 14 and a shaft 15.
- the head 14 includes a spherical undersurface 24 and a conical tapered recess 10.
- FIG.2 depicts the screw member 1 prior to insertion into the axial bore 16 of the receiver member 3.
- the receiver member 3 has upper and lower portions, 3 a and 3b, a u-shaped channel 12 with two lateral legs 12a and 12b, and an axial bore.
- the pressure cap 7 comprises upper and lower ends, 7a and 7b respectively; the upper end 7a of the pressure cap 7 comprises a concave radial portion 9 and the lower end 7b comprises a spherical portion 20.
- the pressure cap also has a retaining
- FIG. 3 depicts the system 50 of the present invention in relation to an implantation rod
- the rod 8 prior to assembly.
- the rod 8 is inserted into u-shaped channel 12 and within the bore 16 of the receiver member 3.
- the channel 12 has legs, 12a and 12b, that support the rod 8 upon insertion.
- the rod 8 is situated upon the concave radial portion 9 of pressure cap 7.
- the locking device 11 is secured upon the rod 8 and within the opening and bore 16 near the upper portion 3 a of the receiver member 3.
- FIG.4 illustrates the system 50 in assembled form.
- the rod 8 sits within the channel 12 and bore 16 and is supported by the legs 12a and 12b.
- the locking device 1 1 is used to secure the rod 8 within the channel 12 and bore 16 by applying a tightening torque upon the rod 8.
- the shaft 15 of the screw member 1 dangles from the receiver member 3 and allows for a two dimensional adjustment and multi-axial capabilities.
Abstract
A surgical screw system (50) for use with implantation rods (8) includes a screw member (1), a receiver member (3), a pressure cap (7) and a locking device (11). The screw member has a shaft (15) and a head (14) with a spherical undersurface (24) and a conical tapered recess (10). The receiver member has an upper (3a) and lower (3b) portion, a u-shaped rod receiving channel (12) and an axial bore (16). The u-shaped channel has two lateral legs (12a, 12b) at the upper portion and forms an opening leading to the axial bore. The axial bore near the lower portion includes an inwardly conical tapered surface (5) which has a diameter larger than the shaft of the screw member but smaller than the head of the screw member. The conical surface forms a support upon which the spherical undersurface of the head of the screw member rests when the screw member is guided through the bore of the lower portion of the receiver member. The pressure cap is positioned within the axial bore and situated upon the head of the screw member. The locking device is designed for securing the rod within the u-shaped channel of the receiver member by applying a tightening torque upon the rod when positioned within the opening and the bore near the upper portion of the receiver member.
Description
A SURGICAL SCREW SYSTEM AND RELATED METHODS BACKGROUND OF THE INVENTION;
The present invention relates to a surgical screw system for use with implantation rods, and related methods of using a surgical screw system with implantation rods.
The bones and connective tissue of an adult human spinal column consists of more than 20 discrete bones coupled sequentially to one another by a tri-joint complex. The complex consists of an anterior disc and two posterior facet joints. The anterior discs of adjacent bones are cushioned by cartilage spacers referred to as intervertebral discs. The over 20 bones of the spinal column are anatomically categorized as one of four classification: cervical, thoracic, lumbar, or sacral. The cervical portion of the spine which comprises the top of the spine up to the base of the skull, includes the first 7 vertebrae. The intermediate 12 bones are thoracic vertebrae, and connect to the lower spine comprising the 5 lumbar vertebrae. The base of the spine is a sacral bones (including the coccyx). The spinal column of bones is high complex in that it includes the over 20 bones coupled to one another, housing and protecting critical elements of the nervous system having innumerable peripheral nerves and circulatory bodies in close proximity. Despite its complexity, the spine is a highly flexible structure, capable of a high degree of curvature and twist in nearly every direction. Genetic or developmental irregularities, trauma, chronic stress, tumors and disease, however, can result in spinal pathologies which either limit this range of motion, or which threatens the critical elements of the nervous system housed within the spinal column. A variety of systems have been disclosed in the art which achieve this immobilization by implanting artificial assemblies in or on the spinal column. These assemblies may be classified as anterior posterior or lateral implants. Lateral and anterior assemblies are coupled to the anterior portion
of the spine which is in the sequence of vertebral bodies. Posterior implants generally comprise pairs of rods, which are aligned along the axis which the bones are to be disposed, and which are then attached to the spinal column by either hooks which couple to the lamina or attach to the transverse processes, or by screws which are inserted through the pedicles. It is desirable, during surgical implantation of such orthopedic devices, to have a multi- axial screw system that provides a consistent lock as well as reliability, durability, and ease of installment. SUMMARY OF THE INVENTION:
The present invention relates to a surgical screw system for use with implantation rods. In one embodiment, the system comprises a screw member, a receiver member, a pressure cap and a locking device. The screw member has a head and shaft; the head of the screw member has a spherical undersurface and a conical tapered recess. The receiver member has upper and lower portions, a u-shaped receiving channel and an axial bore. The u-shaped channel has two lateral legs at the upper portion of the receiver member and forms an opening leading to the axial bore; the conical surface has a diameter larger than the shaft of the screw member and a diameter smaller than the head of the screw member. The conical surface forms a support upon which the spherical undersurface of the head of the screw member rests when the screw member is guided through the bore to the lower portion of the receiver member. The pressure cap of the system is positioned within the axial bore of the receiver member and is situated upon the head of the screw member; the pressure cap has upper and lower portions and the upper portion of the cap comprises a concave radial portion upon which the rod is positioned, and the lower portion comprises a spherical portion positioned upon the conical tapered recess of the head of the screw member. The locking device is designed for securing the rod within the u-shaped channel of the receiver member by applying a tightening torque upon the rod when positioned within the
opening and the bore near the upper portion of the receiver member.
In another embodiment, the undersurface of the head and the shaft of the screw member comprise threaded portions. In still another embodiment, the legs of the u-shaped channel has internal threads and the threads may be buttress threads. In a further embodiment, the conical tapered recess of the head of the screw member comprises an aperture coaxial to the shaft and designed to engage a fastening device. The pressure cap further comprises an axial bore extending from the upper through lower ends of the cap; the bore of the pressure cap corresponds to the aperture of the head of the screw member allowing an access for the fastening device. In still a further embodiment, the receiver member further comprises a rectangular key- locking segment and a cylindrical undercut situated adjacent to the bore. In yet a further embodiment, the pressure cap further comprises a cylindrical undercut and a retaining ring; the key-locking segment and the undercut of the receiver member are designed to engage the undercut and the ring of the pressure cap to form an anti-rotation and locking mechanism. In yet another embodiment, the legs of the u-shaped channel of the receiver member further comprises a threaded portion and the locking device further comprises a corresponding threaded portion. In another embodiment, the threaded portions are buttress threads. In yet another embodiment, the locking device is a set screw. In still another embodiment, the locking device is a top locking nut. In still yet another embodiment, the aperture of the head of the screw member is hexagon-shaped and the fastening device is a hexagon socket screw key.
In another embodiment, the axial bore of the receiver member comprises a plurality of slots descending down the legs of the u-shaped channel and the locking device comprises at least one protrusion designed to engage at least one of the slots on the legs of the u-shaped channel of the receiver member to secure the locking device within the receiver member. In a further
embodiment, the locking device comprises a top and bottom portion; the bottom portion has a convex recess designed for contacting the curvature of the rod. In still a further embodiment, the screw member, receiver member and the pressure cap may be factory set. The operating physician just needs to attach the screw member to a bone, place the implantation rod into the receiver member and secure the rod into the receiver member using the locking device.
In another embodiment, the present invention relates to a surgical screw and rod implantation system, comprising at least one rod and at least one surgical screw apparatus. The apparatus comprises a screw member having a head and a shaft, the head of the screw member has a spherical undersurface and a conical tapered recess; a receiver member has upper and lower portions, a u-shaped rod receiving channel, and an axial bore; the u-shaped channel has two lateral legs at the upper portion of the receiver member and forms an opening leading to the axial bore; the axial bore near the lower portion of the receiver member includes an inwardly conical tapered surface, the conical tapered surface has a diameter larger than the shaft of the screw member and a diameter smaller than the head of the screw member thereby forming a support upon which the spherical undersurface of the head of the screw member rests when the screw member is guided through the bore to the lower portion of the receiver member; a pressure cap positioned within the axial bore of the receiver member and situated upon the head of the screw member; the pressure cap having upper and lower ends, the upper end of the cap comprising a concave radial portion upon which the rod is positioned, the lower end comprising a spherical portion situated upon the conical tapered recess of the head of the screw member; and a locking device for securing the rod within the u-shaped channel of the receiver member by applying a tightening torque upon the rod when positioned within the opening and the bore near the upper portion of the receiver member.
In still another embodiment, the undersurface of the head and the shaft of the screw
member comprise threaded portions. In yet another embodiment, the conical tapered recess of the head of the screw member comprises an aperture coaxial to the shaft and designed to engage a fastening device. The pressure cap further comprises an axial bore extending from the upper through the lower ends of the aperture of the head of the screw member allowing access for the fastening device.
In a further embodiment, the receiver member further comprises a rectangular key- locking segment and a cylindrical undercut situated adjacent to the bore; the pressure cap further comprises a cylindrical undercut and a retaining ring. In still a further embodiment, the key- locking segment and the undercut of the receiver member are designed to engage the undercut and the ring of the cap to form an anti-rotation and locking mechanism.
In yet a further embodiment, the axial bore of the receiver member further comprises a threaded portion and the locking device further comprises a corresponding threaded portion.
In still yet a further embodiment, the axial bore of the receiver member comprises a plurality of slots descending down the legs of the u-shaped channel and the locking device comprising at least one protrusion designed to engage at least one of the slots of the receiver member to secure the locking device within the receiver member. In another further embodiment, the locking device comprises a top and bottom portion; the bottom portion has a convex recess designed for contacting the curvature of the rod.
In another embodiment, the present invention relates to a method of using a surgical screw system with an implantation rod. The method comprises: providing a screw member, a receiver member and a pressure cap; the screw member having a head and a shaft, the head of the screw member having a spherical undersurface and a conical tapered recess; the receiver member has an upper and lower portion, a u-shaped rod receiving channel and an axial bore; the u-shaped rod receiving channel has two lateral legs at the upper portion of the receiver member
and forms an opening leading to the axial bore; the axial bore near the lower portion of the receiver member including an inwardly conical tapered surface; the conical surface has a diameter larger than the shaft of the screw member and a diameter smaller than the head of the screw member; the pressure cap has upper and lower ends, the upper end comprising a concave radial portion and the lower end comprising a spherical portion; inserting the screw member into the bore of the receiver member and positioning the screw member toward the lower portion of the receiver member such that the conical surface of the bore forms a support upon which the spherical undersurface of the head of the screw member rests upon the conical surface and the shaft of the screw member extends from the receiver member; inserting the pressure cap into the bore of the receiver member and positioning the spherical portion of the cap upon the conical tapered recess of the head of the screw member, and aligning the concave radial portion of the cap with the u-shaped channel such that the concave radial portion is to ready to receive the rod; securing the screw member into the spinal column of the patient; positioning the rod upon the concave radial portion of the cap; and securing the rod within the u-shaped channel of the receiver member using a locking device; the locking device being positioned within the opening and the bore near the upper portion of the receiver member.
In a further embodiment, the head and the shaft of the screw member comprise threaded portions. In still a further embodiment, the conical tapered recess of the head of the screw member comprises an aperture coaxial to the shaft and designed to engage a fastening device; the cap further comprises an axial bore extending from the upper through lower end of the cap, the bore of the cap corresponding to the aperture of the head of the screw member allowing access for the fastening device.
In still a further embodiment, the screw member is screwed into a spinal column using a
fastening device and in another embodiment, the fastening device is a hexagon socket screw key.
In yet a further embodiment, the pressure cap is locked within the bore of the receiver member prior to the screw member being screwed into the spinal column. In still yet a further embodiment, the receiver member further comprises a rectangular key-locking segment and a cylindrical undercut situated adjacent to the bore; the pressure cap further comprising a cylindrical undercut and a retaining ring; the key-locking segment and the undercut of the receiver member being designed to engage the undercut and the ring of the cap to form an anti- rotation and locking mechanism. In another embodiment, the legs of the u-shaped channel of the receiver member further comprise a threaded portion and the locking-device further comprises a corresponding threaded portion. In still another embodiment, the locking device is a set screw and in another embodiment, the locking device is a top locking nut.
In yet another embodiment, the axial bore of the receiver member comprises a plurality of slots descending down the legs of the u-shaped channel and the locking device comprises at least one protrusion designed to engage at least one of the slots of the legs of the u-shaped channel of the receiver member to secure the locking device with the receiver member.
In a further embodiment, the locking device comprises a top and bottom portion; the bottom portion having a convex recess designed for contacting the curvature of the rod. In still a further embodiment, the convex recess of the locking device is aligned with the curvature of the rod before locking the locking device within the receiver member. BRIEF DESCRIPTION OF THE DRAWINGS:
A more complete appreciation of the present invention and many of the attendant advantages thereof will be readily understood by reference to the following description when
considered in connection with the accompanying drawings in which:
FIGURE 1 is a cross sectional view of the surgical screw system of the present invention;
FIGURE 2 is a perspective view of the components of the surgical screw system; FIGURE 3 is a perspective view of the surgical screw system and the rod unassembled; and
FIGURE 4 is a perspective view of the surgical screw system and the rod assembled.
Among those benefits and improvements that have been disclosed, other objects and advantages of this invention will become apparent from the following description taken in conjunction with the accompanying drawings. The drawings constitute a part of this specification and include exemplary embodiments of the present invention and illustrate various objects and features thereof. DETAIL DESCRIPTION OF THE INVENTION:
Referring now to the drawings wherein like reference numerals designate identical or corresponding parts throughout the several views, and more particularly to FIG. 1 wherein the surgical screw system 50 of the present invention is illustrated. The surgical screw system 50 comprises a screw member 1 having a head 14 and shaft 15. The head 14 has spherical undersurface 24 and a conical tapered recess 10. The system 50 further comprises a receiver member 3 having upper and lower portions, 3 a and 3b respectively, a u-shaped rod receiving channel 12, and an axial bore 16. The u-shaped channel 12 has two lateral legs, 12a and 12b respectively, at the upper portion 3 a of the receiver member 3 and forms an opening leading to the axial bore 16. The axial bore 16 near the lower portion 3b of the receiver member 3 includes an inwardly conical tapered surface 5. The conical surface 5 has a diameter larger than the shaft 15 of the screw member 1 and a diameter smaller than the head 14 of the screw member 1. The
conical surface 5 forms a support upon which the spherical undersurface 24 of the head 14 rests when the when the screw member 1 is guided through the bore 16 to the lower portion 3b of the receiver member 3. The system 50 also comprises a pressure cap 7 which is positioned with the axial bore 16 of the receiver member 3 and situated upon the head 14 of the screw member 1. The pressure cap 7 has upper and lower ends, 7a and 7b respectively; the upper end 7a of the pressure cap 7 comprises a concave radial portion 9 upon which a rod 8 is positioned, and the lower end 7b of the pressure cap 7 comprises a spherical portion 20 situated upon the conical tapered recess 10 of the head 14 of the screw member 1. The system 50 further comprises a locking device 1 1 for securing the rod 8 within the u-shaped channel 12 of the receiver member 3 by applying a tightening torque upon the rod 8 when positioned within the opening and bore
16 near the upper portion of 3 a of the receiver member 3.
The undersurface 24 of the head 14 and the shaft 15 of the screw member 1 can comprise threaded portions 33. The conical tapered recess 10 of the screw member 1 comprises an aperture 6 coaxial to the shaft 15 and designed to engage a fastening device. The pressure cap 7 further comprises a axial bore 23 extending from the upper end 7a to the lower end 7b of the pressure cap 7. The bore 23 of the pressure cap 7 corresponds to the aperture 6 of the head 14 of the screw member 1 allowing access for the fastening device.
The receiver member 3 also further comprises a rectangular key-locking segment 18 and a cylindrical undercut 99 situated adjacent to the bore 16. The pressure cap 7 further comprises a cylindrical undercut 98 and a retaining ring 97. The key-locking segment 18 and the undercut
99 of the receiver member 3 are designed to engage the undercut 98 and the ring 97 of the pressure cap 7 to form an anti-rotation and locking mechanism.
The axial bore 16 of the receiver member 3 further comprises threaded portions 42 and the locking device comprises corresponding threaded portions 41. The head 14 of the screw
member 1 is hexagon-shaped and the fastening device is a hexagon socket screw key.
The locking mechanism of the present invention provides a more consistent locking system. The convex spherical/concave conical taper interface of the present invention occurs at two instances: (a) the spherical undersurface 24 of the head 14 of the screw member 1 and the conical tapered recess surface 5 of the receiver member 3 and (b) the spherical portion 20 of the pressure cap 7 and the conical tapered recess 10 of the head 14 of the screw member 1. The convex spherical/concave conical taper interface at each junction of the locking mechanism of the present invention are wedge jointly. This wedge joint is achieved when a changing force is applied and the convex spherical feature is compressed into the concave conical taper feature. At the periphery point contacts and at the component interfaces, a resultant hoop stress is created.
This hoop stress has a wedging effect at the component interfaces, thereby consistently locking the device in position. In addition to the wedging effect, the present invention also provides a mechanical leverage. The wedging effect and mechanical leverage provides for a consistently robust locking mechanism. The consistency is based upon the reproducible nature of the tapered nest geometry. Even when considering tolerance, the taper lock wedging effect and leverage position will always be consistently achieved. If any tolerance variation is encountered, this will translate into a slight variation of height in the longitudinal axis of the assembly which is negligible as to the function of the locking mechanism and the final device assembly.
FIG. 2 depicts a perspective view of the components of the surgical screw system 50 of the present invention. The system 50 comprises a screw member 1, a receiver member 3, a pressure cap 7 and a locking device. The screw member 1 comprises a head 14 and a shaft 15. The head 14 includes a spherical undersurface 24 and a conical tapered recess 10. FIG.2 depicts the screw member 1 prior to insertion into the axial bore 16 of the receiver member 3. The receiver member 3 has upper and lower portions, 3 a and 3b, a u-shaped channel 12 with two
lateral legs 12a and 12b, and an axial bore. The pressure cap 7 comprises upper and lower ends, 7a and 7b respectively; the upper end 7a of the pressure cap 7 comprises a concave radial portion 9 and the lower end 7b comprises a spherical portion 20. The pressure cap also has a retaining
FIG. 3 depicts the system 50 of the present invention in relation to an implantation rod
8 prior to assembly. The rod 8 is inserted into u-shaped channel 12 and within the bore 16 of the receiver member 3. The channel 12 has legs, 12a and 12b, that support the rod 8 upon insertion. The rod 8 is situated upon the concave radial portion 9 of pressure cap 7. The locking device 11 is secured upon the rod 8 and within the opening and bore 16 near the upper portion 3 a of the receiver member 3.
FIG.4 illustrates the system 50 in assembled form. The rod 8 sits within the channel 12 and bore 16 and is supported by the legs 12a and 12b. The locking device 1 1 is used to secure the rod 8 within the channel 12 and bore 16 by applying a tightening torque upon the rod 8. The shaft 15 of the screw member 1 dangles from the receiver member 3 and allows for a two dimensional adjustment and multi-axial capabilities.
Numerous modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that within the scope of the attendant claims appended thereto, this invention may be practiced otherwise than as specifically disclosed herein.
Claims
1. A surgical screw system for use with implantation rods, comprising: a screw member having a head and a shaft, said head of said screw member having a spherical undersurface and a conical tapered recess; a receiver member having upper and lower portions, a u-shaped rod receiving channel, and an axial bore; said u-shaped channel having two lateral legs at said upper portion of said receiver member and forming an opening leading to said axial bore; said axial bore near said lower portion of said receiver member including an inwardly conical tapered surface, said conical surface having a diameter larger than said shaft of said screw member and a diameter smaller than said head of said screw member; said conical surface forming a support upon which said spherical undersurface of said head of said screw member rests when said screw member is guided through said bore to said lower portion of said receiver member; a pressure cap positioned within said axial bore of said receiver member and situated upon said head of said screw member; said pressure cap having upper and lower ends, said upper end of said cap comprising a concave radial portion upon which the rod is positioned, said lower end comprising a spherical portion situated upon said conical tapered recess of said head of said screw member; and a locking device for securing the rod within said u-shaped channel of said receiver member by applying a tightening torque upon the rod when positioned within said opening and said bore near said upper portion of said receiver member.
2. The system of claim 1 wherein said undersurface of said head and said shaft of said screw member comprise threaded portions.
3. The system of claim 1 wherein said conical tapered recess of said head of said screw member comprising an aperture coaxial to said shaft and designed to engage a fastening device; said pressure cap further comprising an axial bore extending from said upper through said lower ends of said cap; said bore of said cap corresponding to said aperture of said head of said screw member allowing an access for said fastening device.
4. The system of claim 1 wherein said receiver member further comprising a rectangular key-locking segment and a cylindrical undercut situated adjacent to said bore; said pressure cap further comprising a cylindrical undercut and a retaining ring; said key-locking segment and said undercut of said receiver member being designed to engage said undercut and said ring of said cap to form an anti-rotation and locking mechanism.
5. The system of claim 1 wherein said legs of said u-shaped channel of said receiver member further comprises a threaded portion and said locking device further comprises a corresponding threaded portion.
6. The system of claim 5 wherein said locking device is a set screw.
7. The system of claim 5 wherein said locking device is a top locking nut.
8. The system of claim 3 wherein said aperture of said head of said screw member is hexagon shaped and said fastening device is a hexagon socket screw key.
9. The system of claim 1 wherein said legs of said u-shaped channel of said receiver member comprises a plurality of slots descending down said bore and said locking device comprising at least one protrusion designed to engage at least one of said slots of said legs of said u-shaped channel of said receiver member to secure said locking device within said receiver member.
10. The system of claim 1 wherein said locking device comprises a top and bottom portion, said bottom portion having a convex recess designed for contacting the curvature of the rod.
1 1. A surgical screw and rod implantation system comprising: at least one rod; at least one surgical screw apparatus comprising: a screw member having a head and a shaft, said head of said screw member having a spherical undersurface and a conical tapered recess; a receiver member having upper and lower portions, a u-shaped rod receiving channel, and an axial bore; said u-shaped channel having two lateral legs at said upper portion of said receiver member and forming an opening leading to said axial bore; said axial bore near said lower portion of said receiver member including an inwardly conical tapered surface, said conical tapered surface having a diameter larger than said shaft of said screw member and a diameter smaller than said head of said screw member thereby forming a support upon which said spherical undersurface of said head of said screw member rests when said screw member is guided through said bore to said lower portion of said receiver member; a pressure cap positioned within said axial bore of said receiver member and situated upon said head of said screw member; said pressure cap having upper and lower ends, said upper end of said cap comprising a concave radial portion upon which the rod is positioned, said lower end comprising a spherical portion situated upon said conical tapered recess of said head of said screw member; and a locking device for securing the rod within said u-shaped channel of said receiver member by applying a tightening torque upon the rod when positioned within said opening and said bore near said upper portion of said receiver member.
12. The system of claim 1 1 wherein said undersurface of said head and said shaft of said screw member comprise threaded portions.
13. The system of claim 11 wherein said conical tapered recess of said head of said screw member comprising an aperture coaxial to said shaft and designed to engage a fastening device; said pressure cap further comprising an axial bore extending from said upper through said lower ends of said cap; said bore of said cap corresponding to said aperture of said head of said screw member allowing an access for the fastening device.
14. The system of claim 11 wherein said receiver member further comprising a rectangular key-locking segment and a cylindrical undercut situated adjacent to said bore; said pressure cap further comprising a cylindrical undercut and a retaining ring; said key-locking segment and said undercut of said receiver member being designed to engage said undercut and said ring of said cap to form an anti-rotation and locking mechanism.
15. The system of claim 1 1 wherein said axial bore of said receiver member further comprises a threaded portion and said locking device further comprises a corresponding threaded portion.
16. The system of claim 1 1 wherein said legs of said u-shaped channel of said receiver member comprises a plurality of slots descending down said bore and said locking device comprising at least one protrusion designed to engage at least one of said slots of said legs of said u-shaped channel of said receiver member to secure said locking device within said receiver member.
17. The system of claim 11 wherein said locking device comprises a top and bottom portion, said bottom portion having a convex recess designed for contacting the curvature of the rod.
18. A method of using a surgical screw system with an implantation rod, said method comprising: providing a screw member, a receiver member and a pressure cap; said screw member having a head and a shaft, said head of said screw member having a spherical undersurface and a conical tapered recess; said receiver member having upper and lower portions, a u-shaped rod receiving channel and an axial bore; said u-shaped rod receiving channel having two lateral legs at said upper portion of said receiver member and forming an opening leading to said axial bore; said axial bore near said lower portion of said receiver member including an inwardly conical tapered surface; said conical surface having a diameter larger than said shaft of said screw member and a diameter smaller than said head of said screw member; said pressure cap having upper and lower ends, said upper end comprising a concave radial portion and said lower end comprising a spherical portion; inserting said screw member into said bore of said receiver member and positioning said screw member toward said lower portion of said receiver member such that said conical surface of said bore forms a support upon which said spherical undersurface of said head of said screw member rests upon said conical surface and said shaft of said screw member extends from said receiver member; inserting said pressure cap into said bore of said receiver member and positioning said spherical portion of said cap upon said conical tapered recess of said head of said screw member, and aligning said concave radial portion of said cap with said u-shaped channel such that said concave radial portion is ready to receive the rod; screwing said screw member into the spinal column of a patient; positioning the rod upon said concave radial portion of said cap; and securing the rod within said u-shaped channel of said receiver member using a locking device; said locking device being positioned within said opening and said bore near said upper portion of said receiver member.
19. The method of claim 19 wherein said head and said shaft of said screw member comprise threaded portions.
20. The method of claim 19 wherein said conical tapered recess of said head of said screw member comprising an aperture coaxial to said shaft and designed to engage a fastening device; said cap further comprising an axial bore extending from said upper through said lower ends of said cap, said bore of said cap corresponding to said aperture of said head of said screw member allowing access for said fastening device.
21. The method of claim 20 wherein said screw member is screwed into the spinal column using said fastening device.
22. The method of claim 20 wherein said aperture of said head of said screw member is hexagon shaped and said fastening device is a hexagon socket screw key.
23. The method of claim 18 wherein said pressure cap is locked within said bore of said receiver member prior to said screw member being screwed into the spinal column.
24. The method of claim 23 wherein said receiver member further comprising a rectangular key-locking segment and a cylindrical undercut situated adjacent to said bore; said pressure cap further comprising a cylindrical undercut and a retaining ring; said key-locking segment and said undercut of said receiver member being designed to engage said undercut and said ring of said cap to form an anti-rotation and locking mechanism.
25. The method of claim 18 wherein said axial bore of said receiver member further comprises a threaded portion and said locking device further comprises a corresponding threaded portion.
26. The method of claim 25 wherein said locking device is a set screw.
27. The method of claim 25 wherein said locking device is a top locking nut.
28. The method of claim 18 wherein said legs of said u-shaped channel of said receiver member comprises a plurality of slots descending down said bore and said locking device comprising at least one protrusion designed to engage at least one of said slots of said legs of said u-shaped channel of said receiver member to secure said locking device within said receiver member.
29. The method of claim 18 wherein said locking device comprises a top and bottom portion, said bottom portion having a convex recess designed for contacting the curvature of the rod.
30. The method of claim 29 wherein said convex recess of said locking device is aligned with the curvature of the rod before locking said locking device within said receiver member.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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AU14933/01A AU1493301A (en) | 1999-09-27 | 2000-09-27 | A surgical screw system and related methods |
CA002423973A CA2423973A1 (en) | 1999-09-27 | 2000-09-27 | A surgical screw system and related methods |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US40704499A | 1999-09-27 | 1999-09-27 | |
US09/407,044 | 1999-09-27 |
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PCT/US2000/041015 WO2001022893A1 (en) | 1999-09-27 | 2000-09-27 | A surgical screw system and related methods |
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US (1) | US6540748B2 (en) |
AU (1) | AU1493301A (en) |
CA (1) | CA2423973A1 (en) |
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GB2365345A (en) * | 2000-07-22 | 2002-02-20 | Corin Spinal Systems Ltd | A pedicle attachment assembly |
WO2003059182A1 (en) | 2001-12-31 | 2003-07-24 | Synthes Ag Chur | Device for a ball-and-socket-type connection of two parts |
WO2003068088A1 (en) * | 2002-02-13 | 2003-08-21 | Cross Medical Products, Inc. | Posterior polyaxial system for the spine |
US6626908B2 (en) | 2000-07-22 | 2003-09-30 | Corin Spinal Systems Limited | Pedicle attachment assembly |
EP1722700A2 (en) * | 2004-02-27 | 2006-11-22 | Custom Spine, Inc. | Biased angle polyaxial pedicle screw assembly |
EP1857064A1 (en) * | 2006-05-15 | 2007-11-21 | Biomet Spain Orthopaedics S.L. | Surgical screw system |
US7819902B2 (en) | 2004-02-27 | 2010-10-26 | Custom Spine, Inc. | Medialised rod pedicle screw assembly |
US7862594B2 (en) | 2004-02-27 | 2011-01-04 | Custom Spine, Inc. | Polyaxial pedicle screw assembly |
FR2958531A1 (en) * | 2010-04-07 | 2011-10-14 | Michel Timoteo | Device for angular indexing of fixation connector of spinal osteosynthesis equipment with respect to spherical head of pedicular screw in bone body of vertebra, has blind housing to completely limit angular displacements of connector |
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US8439954B2 (en) | 2004-02-27 | 2013-05-14 | Custom Spine, Inc. | Spring-loaded, load sharing polyaxial pedicle screw assembly and method |
US8709051B2 (en) | 2004-08-27 | 2014-04-29 | Blackstone Medical, Inc. | Multi-axial connection system |
US8852239B2 (en) | 2013-02-15 | 2014-10-07 | Roger P Jackson | Sagittal angle screw with integral shank and receiver |
US8870928B2 (en) | 2002-09-06 | 2014-10-28 | Roger P. Jackson | Helical guide and advancement flange with radially loaded lip |
US8911478B2 (en) | 2012-11-21 | 2014-12-16 | Roger P. Jackson | Splay control closure for open bone anchor |
US8926672B2 (en) | 2004-11-10 | 2015-01-06 | Roger P. Jackson | Splay control closure for open bone anchor |
US8926670B2 (en) | 2003-06-18 | 2015-01-06 | Roger P. Jackson | Polyaxial bone screw assembly |
US8951290B2 (en) | 2004-08-27 | 2015-02-10 | Blackstone Medical, Inc. | Multi-axial connection system |
US8998960B2 (en) | 2004-11-10 | 2015-04-07 | Roger P. Jackson | Polyaxial bone screw with helically wound capture connection |
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US9005205B2 (en) | 2013-03-04 | 2015-04-14 | Degen Medical, Inc. | Rod insertion tools, rods and methods |
US9060814B2 (en) | 2011-10-28 | 2015-06-23 | Ortho Innovations, Llc | Spring clip bottom loading polyaxial ball and socket fastener |
US9144444B2 (en) | 2003-06-18 | 2015-09-29 | Roger P Jackson | Polyaxial bone anchor with helical capture connection, insert and dual locking assembly |
US9308027B2 (en) | 2005-05-27 | 2016-04-12 | Roger P Jackson | Polyaxial bone screw with shank articulation pressure insert and method |
US9393047B2 (en) | 2009-06-15 | 2016-07-19 | Roger P. Jackson | Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock |
US9453526B2 (en) | 2013-04-30 | 2016-09-27 | Degen Medical, Inc. | Bottom-loading anchor assembly |
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US9655659B2 (en) | 2013-04-20 | 2017-05-23 | Degen Medical, Inc. | Anchor tower |
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US10349983B2 (en) | 2003-05-22 | 2019-07-16 | Alphatec Spine, Inc. | Pivotal bone anchor assembly with biased bushing for pre-lock friction fit |
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Families Citing this family (245)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0764525A (en) * | 1990-02-05 | 1995-03-10 | Scitex Corp Ltd | Apparatus and method for processing of color image |
US6280442B1 (en) * | 1999-09-01 | 2001-08-28 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US7695502B2 (en) | 2000-02-01 | 2010-04-13 | Depuy Products, Inc. | Bone stabilization system including plate having fixed-angle holes together with unidirectional locking screws and surgeon-directed locking screws |
US6767351B2 (en) * | 2000-02-01 | 2004-07-27 | Hand Innovations, Inc. | Fixation system with multidirectional stabilization pegs |
US7857838B2 (en) * | 2003-03-27 | 2010-12-28 | Depuy Products, Inc. | Anatomical distal radius fracture fixation plate |
US6706046B2 (en) * | 2000-02-01 | 2004-03-16 | Hand Innovations, Inc. | Intramedullary fixation device for metaphyseal long bone fractures and methods of using the same |
US6893444B2 (en) * | 2000-02-01 | 2005-05-17 | Hand Innovations, Llc | Bone fracture fixation systems with both multidirectional and unidirectional stabilization pegs |
US20060041260A1 (en) * | 2000-02-01 | 2006-02-23 | Orbay Jorge L | Fixation system with plate having holes with divergent axes and multidirectional fixators for use therethrough |
US20040153073A1 (en) * | 2000-02-01 | 2004-08-05 | Hand Innovations, Inc. | Orthopedic fixation system including plate element with threaded holes having divergent axes |
US7056321B2 (en) | 2000-08-01 | 2006-06-06 | Endius, Incorporated | Method of securing vertebrae |
US7985247B2 (en) * | 2000-08-01 | 2011-07-26 | Zimmer Spine, Inc. | Methods and apparatuses for treating the spine through an access device |
US7837716B2 (en) * | 2000-08-23 | 2010-11-23 | Jackson Roger P | Threadform for medical implant closure |
US8512380B2 (en) * | 2002-08-28 | 2013-08-20 | Warsaw Orthopedic, Inc. | Posterior fixation system |
US6485491B1 (en) * | 2000-09-15 | 2002-11-26 | Sdgi Holdings, Inc. | Posterior fixation system |
US6368321B1 (en) * | 2000-12-04 | 2002-04-09 | Roger P. Jackson | Lockable swivel head bone screw |
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US6488681B2 (en) | 2001-01-05 | 2002-12-03 | Stryker Spine S.A. | Pedicle screw assembly |
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US7862587B2 (en) * | 2004-02-27 | 2011-01-04 | Jackson Roger P | Dynamic stabilization assemblies, tool set and method |
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US8292926B2 (en) | 2005-09-30 | 2012-10-23 | Jackson Roger P | Dynamic stabilization connecting member with elastic core and outer sleeve |
US8353932B2 (en) * | 2005-09-30 | 2013-01-15 | Jackson Roger P | Polyaxial bone anchor assembly with one-piece closure, pressure insert and plastic elongate member |
FR2831048B1 (en) * | 2001-10-18 | 2004-09-17 | Ldr Medical | PROGRESSIVE APPROACH OSTEOSYNTHESIS DEVICE AND PRE-ASSEMBLY PROCESS |
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WO2003041601A1 (en) * | 2001-11-14 | 2003-05-22 | Synthes Ag Chur | Device for joining a longitudinal support with a bone fixation means |
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US7879075B2 (en) | 2002-02-13 | 2011-02-01 | Zimmer Spine, Inc. | Methods for connecting a longitudinal member to a bone portion |
US7066937B2 (en) * | 2002-02-13 | 2006-06-27 | Endius Incorporated | Apparatus for connecting a longitudinal member to a bone portion |
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US7175623B2 (en) * | 2002-06-24 | 2007-02-13 | Lanx, Llc | Cervical plate with backout protection |
US20050101961A1 (en) * | 2003-11-12 | 2005-05-12 | Huebner Randall J. | Bone screws |
US8523913B2 (en) | 2002-09-06 | 2013-09-03 | Roger P. Jackson | Helical guide and advancement flange with break-off extensions |
US8282673B2 (en) | 2002-09-06 | 2012-10-09 | Jackson Roger P | Anti-splay medical implant closure with multi-surface removal aperture |
US8257402B2 (en) | 2002-09-06 | 2012-09-04 | Jackson Roger P | Closure for rod receiving orthopedic implant having left handed thread removal |
US20040111090A1 (en) * | 2002-10-03 | 2004-06-10 | The University Of North Carolina At Chapel Hill | Modification of percutaneous intrafocal plate system |
US9539012B2 (en) | 2002-10-30 | 2017-01-10 | Zimmer Spine, Inc. | Spinal stabilization systems with quick-connect sleeve assemblies for use in surgical procedures |
US20040147928A1 (en) * | 2002-10-30 | 2004-07-29 | Landry Michael E. | Spinal stabilization system using flexible members |
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US20050187551A1 (en) * | 2002-12-02 | 2005-08-25 | Orbay Jorge L. | Bone plate system with bone screws fixed by secondary compression |
DE10256095B4 (en) * | 2002-12-02 | 2004-11-18 | Biedermann Motech Gmbh | Element with a shaft and an associated holding element for connecting to a rod |
US7780664B2 (en) * | 2002-12-10 | 2010-08-24 | Depuy Products, Inc. | Endosteal nail |
US7887539B2 (en) | 2003-01-24 | 2011-02-15 | Depuy Spine, Inc. | Spinal rod approximators |
US7044953B2 (en) * | 2003-02-27 | 2006-05-16 | Stryker Leibinger Gmbh & Co. Kg | Compression bone screw |
US20040186473A1 (en) * | 2003-03-21 | 2004-09-23 | Cournoyer John R. | Spinal fixation devices of improved strength and rigidity |
US20040193155A1 (en) * | 2003-03-27 | 2004-09-30 | Hand Innovations, Inc. | Fracture fixation plate with particular plate hole and fastener engagement and methods of using the same |
US8540753B2 (en) * | 2003-04-09 | 2013-09-24 | Roger P. Jackson | Polyaxial bone screw with uploaded threaded shank and method of assembly and use |
US20070016200A1 (en) * | 2003-04-09 | 2007-01-18 | Jackson Roger P | Dynamic stabilization medical implant assemblies and methods |
US6716214B1 (en) | 2003-06-18 | 2004-04-06 | Roger P. Jackson | Polyaxial bone screw with spline capture connection |
US6964666B2 (en) * | 2003-04-09 | 2005-11-15 | Jackson Roger P | Polyaxial bone screw locking mechanism |
US8052724B2 (en) * | 2003-06-18 | 2011-11-08 | Jackson Roger P | Upload shank swivel head bone screw spinal implant |
US7621918B2 (en) * | 2004-11-23 | 2009-11-24 | Jackson Roger P | Spinal fixation tool set and method |
US20040210216A1 (en) * | 2003-04-17 | 2004-10-21 | Farris Robert A | Spinal fixation system and method |
US8377102B2 (en) | 2003-06-18 | 2013-02-19 | Roger P. Jackson | Polyaxial bone anchor with spline capture connection and lower pressure insert |
US8137386B2 (en) | 2003-08-28 | 2012-03-20 | Jackson Roger P | Polyaxial bone screw apparatus |
US7322981B2 (en) * | 2003-08-28 | 2008-01-29 | Jackson Roger P | Polyaxial bone screw with split retainer ring |
US8092500B2 (en) | 2007-05-01 | 2012-01-10 | Jackson Roger P | Dynamic stabilization connecting member with floating core, compression spacer and over-mold |
US8814911B2 (en) | 2003-06-18 | 2014-08-26 | Roger P. Jackson | Polyaxial bone screw with cam connection and lock and release insert |
US8257398B2 (en) | 2003-06-18 | 2012-09-04 | Jackson Roger P | Polyaxial bone screw with cam capture |
US8398682B2 (en) | 2003-06-18 | 2013-03-19 | Roger P. Jackson | Polyaxial bone screw assembly |
US7087057B2 (en) | 2003-06-27 | 2006-08-08 | Depuy Acromed, Inc. | Polyaxial bone screw |
US7799082B2 (en) | 2003-08-05 | 2010-09-21 | Flexuspine, Inc. | Artificial functional spinal unit system and method for use |
US7909869B2 (en) * | 2003-08-05 | 2011-03-22 | Flexuspine, Inc. | Artificial spinal unit assemblies |
US7753958B2 (en) * | 2003-08-05 | 2010-07-13 | Gordon Charles R | Expandable intervertebral implant |
US7204853B2 (en) * | 2003-08-05 | 2007-04-17 | Flexuspine, Inc. | Artificial functional spinal unit assemblies |
US7316714B2 (en) * | 2003-08-05 | 2008-01-08 | Flexuspine, Inc. | Artificial functional spinal unit assemblies |
CN100430029C (en) * | 2003-08-20 | 2008-11-05 | 华沙整形外科股份有限公司 | Multi-axial orthopedic device and system, e.g. for spinal surgery |
FR2859095B1 (en) | 2003-09-01 | 2006-05-12 | Ldr Medical | BONE ANCHORING IMPLANT WITH A POLYAXIAL HEAD AND METHOD OF PLACING THE IMPLANT |
FR2859376B1 (en) | 2003-09-04 | 2006-05-19 | Spine Next Sa | SPINAL IMPLANT |
US7967826B2 (en) | 2003-10-21 | 2011-06-28 | Theken Spine, Llc | Connector transfer tool for internal structure stabilization systems |
US7588575B2 (en) | 2003-10-21 | 2009-09-15 | Innovative Spinal Technologies | Extension for use with stabilization systems for internal structures |
US7527638B2 (en) * | 2003-12-16 | 2009-05-05 | Depuy Spine, Inc. | Methods and devices for minimally invasive spinal fixation element placement |
US11419642B2 (en) | 2003-12-16 | 2022-08-23 | Medos International Sarl | Percutaneous access devices and bone anchor assemblies |
US7179261B2 (en) | 2003-12-16 | 2007-02-20 | Depuy Spine, Inc. | Percutaneous access devices and bone anchor assemblies |
US7666188B2 (en) | 2003-12-16 | 2010-02-23 | Depuy Spine, Inc. | Methods and devices for spinal fixation element placement |
US7789896B2 (en) | 2005-02-22 | 2010-09-07 | Jackson Roger P | Polyaxial bone screw assembly |
US8152810B2 (en) | 2004-11-23 | 2012-04-10 | Jackson Roger P | Spinal fixation tool set and method |
CA2555868C (en) | 2004-02-27 | 2011-09-06 | Roger P. Jackson | Orthopedic implant rod reduction tool set and method |
US7160300B2 (en) | 2004-02-27 | 2007-01-09 | Jackson Roger P | Orthopedic implant rod reduction tool set and method |
US9050148B2 (en) * | 2004-02-27 | 2015-06-09 | Roger P. Jackson | Spinal fixation tool attachment structure |
US7547318B2 (en) * | 2004-03-19 | 2009-06-16 | Depuy Spine, Inc. | Spinal fixation element and methods |
US20050228380A1 (en) * | 2004-04-09 | 2005-10-13 | Depuy Spine Inc. | Instruments and methods for minimally invasive spine surgery |
US7942912B2 (en) * | 2004-05-25 | 2011-05-17 | University Of Utah Research Foundation | Occipitocervical plate |
US8241337B2 (en) * | 2004-05-25 | 2012-08-14 | Brockmeyer Douglas L | Occipitocervical plate |
US7559943B2 (en) * | 2004-06-09 | 2009-07-14 | Zimmer Spine, Inc. | Spinal fixation device with internal drive structure |
US7264621B2 (en) * | 2004-06-17 | 2007-09-04 | Sdgi Holdings, Inc. | Multi-axial bone attachment assembly |
US7766945B2 (en) * | 2004-08-10 | 2010-08-03 | Lanx, Inc. | Screw and rod fixation system |
US7651502B2 (en) * | 2004-09-24 | 2010-01-26 | Jackson Roger P | Spinal fixation tool set and method for rod reduction and fastener insertion |
US8366747B2 (en) * | 2004-10-20 | 2013-02-05 | Zimmer Spine, Inc. | Apparatus for connecting a longitudinal member to a bone portion |
US7513905B2 (en) | 2004-11-03 | 2009-04-07 | Jackson Roger P | Polyaxial bone screw |
US7572279B2 (en) * | 2004-11-10 | 2009-08-11 | Jackson Roger P | Polyaxial bone screw with discontinuous helically wound capture connection |
US8556938B2 (en) | 2009-06-15 | 2013-10-15 | Roger P. Jackson | Polyaxial bone anchor with non-pivotable retainer and pop-on shank, some with friction fit |
US9980753B2 (en) | 2009-06-15 | 2018-05-29 | Roger P Jackson | pivotal anchor with snap-in-place insert having rotation blocking extensions |
US8308782B2 (en) | 2004-11-23 | 2012-11-13 | Jackson Roger P | Bone anchors with longitudinal connecting member engaging inserts and closures for fixation and optional angulation |
US7625396B2 (en) | 2004-11-23 | 2009-12-01 | Jackson Roger P | Polyaxial bone screw with multi-part shank retainer |
US9216041B2 (en) | 2009-06-15 | 2015-12-22 | Roger P. Jackson | Spinal connecting members with tensioned cords and rigid sleeves for engaging compression inserts |
US7875065B2 (en) | 2004-11-23 | 2011-01-25 | Jackson Roger P | Polyaxial bone screw with multi-part shank retainer and pressure insert |
US7799062B2 (en) * | 2004-11-30 | 2010-09-21 | Stryker Trauma S.A. | Self-guiding threaded fastener |
WO2006069089A2 (en) | 2004-12-21 | 2006-06-29 | Packaging Service Corporation Of Kentucky | Cervical plate system |
US7559929B2 (en) * | 2005-02-18 | 2009-07-14 | Warsaw Orthopedic, Inc. | Implants and methods for positioning same in surgical approaches to the spine |
US7901437B2 (en) | 2007-01-26 | 2011-03-08 | Jackson Roger P | Dynamic stabilization member with molded connection |
US10076361B2 (en) | 2005-02-22 | 2018-09-18 | Roger P. Jackson | Polyaxial bone screw with spherical capture, compression and alignment and retention structures |
US7476239B2 (en) * | 2005-05-10 | 2009-01-13 | Jackson Roger P | Polyaxial bone screw with compound articulation |
US7951172B2 (en) | 2005-03-04 | 2011-05-31 | Depuy Spine Sarl | Constrained motion bone screw assembly |
US7951175B2 (en) | 2005-03-04 | 2011-05-31 | Depuy Spine, Inc. | Instruments and methods for manipulating a vertebra |
US7338491B2 (en) * | 2005-03-22 | 2008-03-04 | Spinefrontier Inc | Spinal fixation locking mechanism |
US20060217717A1 (en) * | 2005-03-24 | 2006-09-28 | Dale Whipple | Methods and devices for stabilizing a bone anchor |
US20060235385A1 (en) * | 2005-03-31 | 2006-10-19 | Dale Whipple | Low profile polyaxial screw |
US7749259B2 (en) * | 2005-04-08 | 2010-07-06 | Warsaw Orthopedic, Inc. | Slotted screw for use with a vertebral member |
US20060233597A1 (en) * | 2005-04-18 | 2006-10-19 | Ensign Micheal D | Cam based rod connection system and method |
JP5084195B2 (en) * | 2005-08-03 | 2012-11-28 | ビーダーマン・モテーク・ゲゼルシャフト・ミット・ベシュレンクタ・ハフツング | Bone anchoring device |
CH705709B1 (en) * | 2005-08-29 | 2013-05-15 | Bird Biedermann Ag | Spinal implant. |
DE502006002049D1 (en) * | 2005-09-13 | 2008-12-24 | Bird Biedermann Ag | Dynamic clamping device for spinal implant |
US7905909B2 (en) * | 2005-09-19 | 2011-03-15 | Depuy Products, Inc. | Bone stabilization system including multi-directional threaded fixation element |
US7955358B2 (en) | 2005-09-19 | 2011-06-07 | Albert Todd J | Bone screw apparatus, system and method |
US8105368B2 (en) | 2005-09-30 | 2012-01-31 | Jackson Roger P | Dynamic stabilization connecting member with slitted core and outer sleeve |
US7722651B2 (en) * | 2005-10-21 | 2010-05-25 | Depuy Spine, Inc. | Adjustable bone screw assembly |
GB0521585D0 (en) * | 2005-10-22 | 2005-11-30 | Depuy Int Ltd | A spinal support rod |
GB0521582D0 (en) * | 2005-10-22 | 2005-11-30 | Depuy Int Ltd | An implant for supporting a spinal column |
EP1795134B1 (en) * | 2005-11-17 | 2008-08-06 | BIEDERMANN MOTECH GmbH | Polyaxial screw for flexible rod |
GB0600662D0 (en) * | 2006-01-13 | 2006-02-22 | Depuy Int Ltd | Spinal support rod kit |
US8348952B2 (en) | 2006-01-26 | 2013-01-08 | Depuy International Ltd. | System and method for cooling a spinal correction device comprising a shape memory material for corrective spinal surgery |
US8118869B2 (en) | 2006-03-08 | 2012-02-21 | Flexuspine, Inc. | Dynamic interbody device |
US8172882B2 (en) | 2006-06-14 | 2012-05-08 | Spartek Medical, Inc. | Implant system and method to treat degenerative disorders of the spine |
US8663292B2 (en) * | 2006-08-22 | 2014-03-04 | DePuy Synthes Products, LLC | Reduction sleeve |
WO2008039790A1 (en) * | 2006-09-25 | 2008-04-03 | Zimmer Spine, Inc. | Apparatus for connecting a longitudinal member to a bone portion |
US7918857B2 (en) | 2006-09-26 | 2011-04-05 | Depuy Spine, Inc. | Minimally invasive bone anchor extensions |
US8167910B2 (en) | 2006-10-16 | 2012-05-01 | Innovative Delta Technology Llc | Bone screw and associated assembly and methods of use thereof |
US8066744B2 (en) * | 2006-11-10 | 2011-11-29 | Warsaw Orthopedic, Inc. | Keyed crown orientation for multi-axial screws |
US8162990B2 (en) | 2006-11-16 | 2012-04-24 | Spine Wave, Inc. | Multi-axial spinal fixation system |
CA2670988C (en) | 2006-12-08 | 2014-03-25 | Roger P. Jackson | Tool system for dynamic spinal implants |
US8636783B2 (en) * | 2006-12-29 | 2014-01-28 | Zimmer Spine, Inc. | Spinal stabilization systems and methods |
EP2117451A1 (en) * | 2006-12-29 | 2009-11-18 | Zimmer Spine Austin, Inc. | Spinal stabilization systems and methods |
US9962194B2 (en) | 2007-01-15 | 2018-05-08 | Innovative Delta Technology, Llc | Polyaxial spinal stabilizer connector and methods of use thereof |
US7794478B2 (en) | 2007-01-15 | 2010-09-14 | Innovative Delta Technology, Llc | Polyaxial cross connector and methods of use thereof |
US8366745B2 (en) | 2007-05-01 | 2013-02-05 | Jackson Roger P | Dynamic stabilization assembly having pre-compressed spacers with differential displacements |
US8475498B2 (en) | 2007-01-18 | 2013-07-02 | Roger P. Jackson | Dynamic stabilization connecting member with cord connection |
US9066811B2 (en) | 2007-01-19 | 2015-06-30 | Flexuspine, Inc. | Artificial functional spinal unit system and method for use |
US8012177B2 (en) | 2007-02-12 | 2011-09-06 | Jackson Roger P | Dynamic stabilization assembly with frusto-conical connection |
EP1972289B1 (en) * | 2007-03-23 | 2018-10-17 | coLigne AG | Elongated stabilization member and bone anchor useful in bone and especially spinal repair processes |
US7967849B2 (en) * | 2007-04-06 | 2011-06-28 | Warsaw Orthopedic, Inc. | Adjustable multi-axial spinal coupling assemblies |
US10383660B2 (en) | 2007-05-01 | 2019-08-20 | Roger P. Jackson | Soft stabilization assemblies with pretensioned cords |
US8197517B1 (en) | 2007-05-08 | 2012-06-12 | Theken Spine, Llc | Frictional polyaxial screw assembly |
US7942911B2 (en) | 2007-05-16 | 2011-05-17 | Ortho Innovations, Llc | Polyaxial bone screw |
US7942909B2 (en) | 2009-08-13 | 2011-05-17 | Ortho Innovations, Llc | Thread-thru polyaxial pedicle screw system |
US8197518B2 (en) | 2007-05-16 | 2012-06-12 | Ortho Innovations, Llc | Thread-thru polyaxial pedicle screw system |
US7947065B2 (en) * | 2008-11-14 | 2011-05-24 | Ortho Innovations, Llc | Locking polyaxial ball and socket fastener |
US7951173B2 (en) | 2007-05-16 | 2011-05-31 | Ortho Innovations, Llc | Pedicle screw implant system |
US7942910B2 (en) | 2007-05-16 | 2011-05-17 | Ortho Innovations, Llc | Polyaxial bone screw |
AU2008263148C1 (en) | 2007-05-31 | 2012-05-24 | Roger P. Jackson | Dynamic stabilization connecting member with pre-tensioned solid core |
US7963978B2 (en) | 2007-06-05 | 2011-06-21 | Spartek Medical, Inc. | Method for implanting a deflection rod system and customizing the deflection rod system for a particular patient need for dynamic stabilization and motion preservation spinal implantation system |
US8092501B2 (en) | 2007-06-05 | 2012-01-10 | Spartek Medical, Inc. | Dynamic spinal rod and method for dynamic stabilization of the spine |
US8048115B2 (en) | 2007-06-05 | 2011-11-01 | Spartek Medical, Inc. | Surgical tool and method for implantation of a dynamic bone anchor |
WO2008151096A1 (en) | 2007-06-05 | 2008-12-11 | Spartek Medical, Inc. | A deflection rod system for a dynamic stabilization and motion preservation spinal implantation system and method |
US8021396B2 (en) | 2007-06-05 | 2011-09-20 | Spartek Medical, Inc. | Configurable dynamic spinal rod and method for dynamic stabilization of the spine |
US8002800B2 (en) | 2007-06-05 | 2011-08-23 | Spartek Medical, Inc. | Horizontal rod with a mounting platform for a dynamic stabilization and motion preservation spinal implantation system and method |
US8114134B2 (en) | 2007-06-05 | 2012-02-14 | Spartek Medical, Inc. | Spinal prosthesis having a three bar linkage for motion preservation and dynamic stabilization of the spine |
US8083772B2 (en) | 2007-06-05 | 2011-12-27 | Spartek Medical, Inc. | Dynamic spinal rod assembly and method for dynamic stabilization of the spine |
US8048122B2 (en) | 2007-06-05 | 2011-11-01 | Spartek Medical, Inc. | Spine implant with a dual deflection rod system including a deflection limiting sheild associated with a bone screw and method |
FR2916956B1 (en) | 2007-06-08 | 2012-12-14 | Ldr Medical | INTERSOMATIC CAGE, INTERVERTEBRAL PROSTHESIS, ANCHORING DEVICE AND IMPLANTATION INSTRUMENTATION |
US8668725B2 (en) * | 2007-07-13 | 2014-03-11 | Southern Spine, Llc | Bone screw |
US20090069849A1 (en) * | 2007-09-10 | 2009-03-12 | Oh Younghoon | Dynamic screw system |
US8414588B2 (en) | 2007-10-04 | 2013-04-09 | Depuy Spine, Inc. | Methods and devices for minimally invasive spinal connection element delivery |
US8157844B2 (en) | 2007-10-22 | 2012-04-17 | Flexuspine, Inc. | Dampener system for a posterior stabilization system with a variable length elongated member |
US8523912B2 (en) | 2007-10-22 | 2013-09-03 | Flexuspine, Inc. | Posterior stabilization systems with shared, dual dampener systems |
US8182514B2 (en) | 2007-10-22 | 2012-05-22 | Flexuspine, Inc. | Dampener system for a posterior stabilization system with a fixed length elongated member |
US8267965B2 (en) | 2007-10-22 | 2012-09-18 | Flexuspine, Inc. | Spinal stabilization systems with dynamic interbody devices |
US8162994B2 (en) | 2007-10-22 | 2012-04-24 | Flexuspine, Inc. | Posterior stabilization system with isolated, dual dampener systems |
US8187330B2 (en) | 2007-10-22 | 2012-05-29 | Flexuspine, Inc. | Dampener system for a posterior stabilization system with a variable length elongated member |
US8911477B2 (en) | 2007-10-23 | 2014-12-16 | Roger P. Jackson | Dynamic stabilization member with end plate support and cable core extension |
GB0720762D0 (en) | 2007-10-24 | 2007-12-05 | Depuy Spine Sorl | Assembly for orthopaedic surgery |
US8007522B2 (en) | 2008-02-04 | 2011-08-30 | Depuy Spine, Inc. | Methods for correction of spinal deformities |
US8257401B2 (en) * | 2008-02-12 | 2012-09-04 | Spinal U.S.A. | Bottom mounted pedical screw assembly |
US8211155B2 (en) | 2008-02-26 | 2012-07-03 | Spartek Medical, Inc. | Load-sharing bone anchor having a durable compliant member and method for dynamic stabilization of the spine |
US8057517B2 (en) | 2008-02-26 | 2011-11-15 | Spartek Medical, Inc. | Load-sharing component having a deflectable post and centering spring and method for dynamic stabilization of the spine |
US8048125B2 (en) | 2008-02-26 | 2011-11-01 | Spartek Medical, Inc. | Versatile offset polyaxial connector and method for dynamic stabilization of the spine |
US8083775B2 (en) | 2008-02-26 | 2011-12-27 | Spartek Medical, Inc. | Load-sharing bone anchor having a natural center of rotation and method for dynamic stabilization of the spine |
US8333792B2 (en) | 2008-02-26 | 2012-12-18 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post and method for dynamic stabilization of the spine |
US8267979B2 (en) | 2008-02-26 | 2012-09-18 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post and axial spring and method for dynamic stabilization of the spine |
US20100030224A1 (en) | 2008-02-26 | 2010-02-04 | Spartek Medical, Inc. | Surgical tool and method for connecting a dynamic bone anchor and dynamic vertical rod |
US8097024B2 (en) | 2008-02-26 | 2012-01-17 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post and method for stabilization of the spine |
US8337536B2 (en) | 2008-02-26 | 2012-12-25 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post with a compliant ring and method for stabilization of the spine |
US8608746B2 (en) | 2008-03-10 | 2013-12-17 | DePuy Synthes Products, LLC | Derotation instrument with reduction functionality |
US8709015B2 (en) | 2008-03-10 | 2014-04-29 | DePuy Synthes Products, LLC | Bilateral vertebral body derotation system |
US10973556B2 (en) * | 2008-06-17 | 2021-04-13 | DePuy Synthes Products, Inc. | Adjustable implant assembly |
US8491639B2 (en) | 2008-08-06 | 2013-07-23 | Spine Wave, Inc. | Multi-axial spinal fixation system |
US9005260B2 (en) * | 2009-01-15 | 2015-04-14 | Aesculap Implant Systems, Llc | Receiver body for spinal fixation system |
US20100198271A1 (en) * | 2009-02-02 | 2010-08-05 | Vincent Leone | Screw Sheath for Minimally Invasive Spinal Surgery and Method Relating Thereto |
US8998961B1 (en) | 2009-02-26 | 2015-04-07 | Lanx, Inc. | Spinal rod connector and methods |
US8486115B2 (en) * | 2009-03-13 | 2013-07-16 | Lanx, Inc. | Spinal plate assemblies with backout protection cap and methods |
US8241341B2 (en) | 2009-03-20 | 2012-08-14 | Spinal Usa, Inc. | Pedicle screws and methods of using the same |
US8211154B2 (en) * | 2009-04-06 | 2012-07-03 | Lanx, Inc. | Bone plate assemblies with backout protection and visual indicator |
US9668771B2 (en) | 2009-06-15 | 2017-06-06 | Roger P Jackson | Soft stabilization assemblies with off-set connector |
US8236035B1 (en) | 2009-06-16 | 2012-08-07 | Bedor Bernard M | Spinal fixation system and method |
TWI369971B (en) * | 2009-07-03 | 2012-08-11 | Accumis Inc | Spine fixation device |
US20110066187A1 (en) * | 2009-09-11 | 2011-03-17 | Zimmer Spine, Inc. | Spinal stabilization system |
US8663289B2 (en) * | 2009-10-29 | 2014-03-04 | Warsaw Orthopedic, Inc. | Pedicle screw head extender |
US9044272B2 (en) | 2009-11-09 | 2015-06-02 | Ebi, Llc | Multiplanar bone anchor system |
US8449578B2 (en) | 2009-11-09 | 2013-05-28 | Ebi, Llc | Multiplanar bone anchor system |
US10172647B2 (en) * | 2009-11-16 | 2019-01-08 | Nexxt Spine, LLC | Poly-axial implant fixation system |
EP2506785A4 (en) | 2009-12-02 | 2014-10-15 | Spartek Medical Inc | Low profile spinal prosthesis incorporating a bone anchor having a deflectable post and a compound spinal rod |
EP2343020B1 (en) * | 2010-01-08 | 2014-08-13 | Biedermann Technologies GmbH & Co. KG | Bone screw |
US20110307018A1 (en) | 2010-06-10 | 2011-12-15 | Spartek Medical, Inc. | Adaptive spinal rod and methods for stabilization of the spine |
US9084634B1 (en) | 2010-07-09 | 2015-07-21 | Theken Spine, Llc | Uniplanar screw |
US10603083B1 (en) | 2010-07-09 | 2020-03-31 | Theken Spine, Llc | Apparatus and method for limiting a range of angular positions of a screw |
WO2012030712A1 (en) | 2010-08-30 | 2012-03-08 | Zimmer Spine, Inc. | Polyaxial pedicle screw |
BR112013005465A2 (en) | 2010-09-08 | 2019-09-24 | P Jackson Roger | connecting element in a medical implant assembly having at least two bone attachment structures cooperating with a dynamic longitudinal connecting element |
GB2502449A (en) | 2010-11-02 | 2013-11-27 | Roger P Jackson | Polyaxial bone anchor with pop-on shank and pivotable retainer |
US8992579B1 (en) * | 2011-03-08 | 2015-03-31 | Nuvasive, Inc. | Lateral fixation constructs and related methods |
WO2012128825A1 (en) | 2011-03-24 | 2012-09-27 | Jackson Roger P | Polyaxial bone anchor with compound articulation and pop-on shank |
US8388687B2 (en) | 2011-03-25 | 2013-03-05 | Flexuspine, Inc. | Interbody device insertion systems and methods |
WO2012139130A1 (en) | 2011-04-07 | 2012-10-11 | Blackstone Medical, Inc. | Clamp for spinal cross connecting device |
EP2747670A4 (en) | 2011-10-05 | 2015-06-24 | Mark A Dodson | Modular retractor and related method |
US9526627B2 (en) | 2011-11-17 | 2016-12-27 | Exactech, Inc. | Expandable interbody device system and method |
US8556942B2 (en) | 2011-12-30 | 2013-10-15 | Blackstone Medical, Inc. | Occipito-cervical fixation assembly and method for constructing same |
US8945186B2 (en) | 2011-12-30 | 2015-02-03 | Blackstone Medical, Inc. | Multi-axial spinal cross connecting device |
US8430916B1 (en) | 2012-02-07 | 2013-04-30 | Spartek Medical, Inc. | Spinal rod connectors, methods of use, and spinal prosthesis incorporating spinal rod connectors |
US9060815B1 (en) | 2012-03-08 | 2015-06-23 | Nuvasive, Inc. | Systems and methods for performing spine surgery |
US9782204B2 (en) | 2012-09-28 | 2017-10-10 | Medos International Sarl | Bone anchor assemblies |
US9101426B2 (en) | 2012-10-11 | 2015-08-11 | Stryker Trauma Sa | Cable plug |
US9486249B2 (en) | 2013-02-14 | 2016-11-08 | Blackstone Medical, Inc. | Rod attachment assembly for occipital plate |
US9492288B2 (en) | 2013-02-20 | 2016-11-15 | Flexuspine, Inc. | Expandable fusion device for positioning between adjacent vertebral bodies |
US9775660B2 (en) | 2013-03-14 | 2017-10-03 | DePuy Synthes Products, Inc. | Bottom-loading bone anchor assemblies and methods |
US9724145B2 (en) | 2013-03-14 | 2017-08-08 | Medos International Sarl | Bone anchor assemblies with multiple component bottom loading bone anchors |
US9259247B2 (en) | 2013-03-14 | 2016-02-16 | Medos International Sarl | Locking compression members for use with bone anchor assemblies and methods |
US10342582B2 (en) | 2013-03-14 | 2019-07-09 | DePuy Synthes Products, Inc. | Bone anchor assemblies and methods with improved locking |
US20140277153A1 (en) | 2013-03-14 | 2014-09-18 | DePuy Synthes Products, LLC | Bone Anchor Assemblies and Methods With Improved Locking |
US9801664B2 (en) | 2013-03-15 | 2017-10-31 | Blackstone Medical, Inc. | Hook with rotating saddle and rotatable mono axial pedicle screw |
US9517089B1 (en) | 2013-10-08 | 2016-12-13 | Nuvasive, Inc. | Bone anchor with offset rod connector |
US9517144B2 (en) | 2014-04-24 | 2016-12-13 | Exactech, Inc. | Limited profile intervertebral implant with incorporated fastening mechanism |
US10398565B2 (en) | 2014-04-24 | 2019-09-03 | Choice Spine, Llc | Limited profile intervertebral implant with incorporated fastening and locking mechanism |
US10499968B2 (en) | 2014-08-08 | 2019-12-10 | Stryker European Holdings I, Llc | Cable plugs for bone plates |
US10149702B2 (en) | 2015-01-12 | 2018-12-11 | Imds Llc | Polyaxial screw and rod system |
CN104799931B (en) * | 2015-04-13 | 2017-07-07 | 李贵涛 | Nest mortar rail chain type replacement and fixation dynamic pedicle screw system |
US9968378B1 (en) * | 2015-07-22 | 2018-05-15 | University Of South Florida | Adaptation sphere saddle |
US9974569B2 (en) * | 2015-08-10 | 2018-05-22 | Warsaw Orthopedic, Inc. | Spinal implant system and methods of use |
US10265104B2 (en) | 2015-09-23 | 2019-04-23 | Deniz Ufuk Erbulut | Pedicle screw |
ES2878182T3 (en) | 2015-12-17 | 2021-11-18 | Ali Fahir Ozer | Double-headed pedicle screw |
WO2017147372A1 (en) | 2016-02-26 | 2017-08-31 | Medos International Sarl | Polyaxial bone fixation element |
US11026730B2 (en) | 2017-05-10 | 2021-06-08 | Medos International Sarl | Bone anchors with drag features and related methods |
EP3441028B1 (en) | 2017-08-08 | 2021-10-06 | Biedermann Technologies GmbH & Co. KG | Receiving part and instrument for holding the receiving part |
US10507043B1 (en) | 2017-10-11 | 2019-12-17 | Seaspine Orthopedics Corporation | Collet for a polyaxial screw assembly |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5882350A (en) * | 1995-04-13 | 1999-03-16 | Fastenetix, Llc | Polyaxial pedicle screw having a threaded and tapered compression locking mechanism |
US5885286A (en) * | 1996-09-24 | 1999-03-23 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US6010503A (en) * | 1998-04-03 | 2000-01-04 | Spinal Innovations, Llc | Locking mechanism |
US6053917A (en) * | 1996-09-24 | 2000-04-25 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US6063090A (en) * | 1996-12-12 | 2000-05-16 | Synthes (U.S.A.) | Device for connecting a longitudinal support to a pedicle screw |
US6074391A (en) * | 1997-06-16 | 2000-06-13 | Howmedica Gmbh | Receiving part for a retaining component of a vertebral column implant |
US6077262A (en) * | 1993-06-04 | 2000-06-20 | Synthes (U.S.A.) | Posterior spinal implant |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2633177B1 (en) | 1988-06-24 | 1991-03-08 | Fabrication Materiel Orthopedi | IMPLANT FOR A SPINAL OSTEOSYNTHESIS DEVICE, ESPECIALLY IN TRAUMATOLOGY |
US5209751A (en) | 1992-02-19 | 1993-05-11 | Danek Medical, Inc. | Spinal fixation system |
US5545165A (en) | 1992-10-09 | 1996-08-13 | Biedermann Motech Gmbh | Anchoring member |
FR2705226B1 (en) * | 1993-05-17 | 1995-07-07 | Tornier Sa | Spine fixator to maintain a spine. |
US5584831A (en) | 1993-07-09 | 1996-12-17 | September 28, Inc. | Spinal fixation device and method |
US5716355A (en) | 1995-04-10 | 1998-02-10 | Sofamor Danek Group, Inc. | Transverse connection for spinal rods |
US5810818A (en) | 1995-10-23 | 1998-09-22 | Fastenetix, Llc | Spinal hook implant having a low blade and S swivel hook |
US5667508A (en) | 1996-05-01 | 1997-09-16 | Fastenetix, Llc | Unitary locking cap for use with a pedicle screw |
FR2748387B1 (en) | 1996-05-13 | 1998-10-30 | Stryker France Sa | BONE FIXATION DEVICE, IN PARTICULAR TO THE SACRUM, IN OSTEOSYNTHESIS OF THE SPINE |
US5733286A (en) | 1997-02-12 | 1998-03-31 | Third Millennium Engineering, Llc | Rod securing polyaxial locking screw and coupling element assembly |
US5752957A (en) | 1997-02-12 | 1998-05-19 | Third Millennium Engineering, Llc | Polyaxial mechanism for use with orthopaedic implant devices |
US5899905A (en) | 1998-10-19 | 1999-05-04 | Third Millennium Engineering Llc | Expansion locking vertebral body screw, staple, and rod assembly |
-
2000
- 2000-09-27 AU AU14933/01A patent/AU1493301A/en not_active Abandoned
- 2000-09-27 WO PCT/US2000/041015 patent/WO2001022893A1/en active Application Filing
- 2000-09-27 CA CA002423973A patent/CA2423973A1/en not_active Abandoned
- 2000-12-28 US US09/751,099 patent/US6540748B2/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6077262A (en) * | 1993-06-04 | 2000-06-20 | Synthes (U.S.A.) | Posterior spinal implant |
US5882350A (en) * | 1995-04-13 | 1999-03-16 | Fastenetix, Llc | Polyaxial pedicle screw having a threaded and tapered compression locking mechanism |
US5885286A (en) * | 1996-09-24 | 1999-03-23 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US6053917A (en) * | 1996-09-24 | 2000-04-25 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US6063090A (en) * | 1996-12-12 | 2000-05-16 | Synthes (U.S.A.) | Device for connecting a longitudinal support to a pedicle screw |
US6074391A (en) * | 1997-06-16 | 2000-06-13 | Howmedica Gmbh | Receiving part for a retaining component of a vertebral column implant |
US6010503A (en) * | 1998-04-03 | 2000-01-04 | Spinal Innovations, Llc | Locking mechanism |
Cited By (59)
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GB2365345B (en) * | 2000-07-22 | 2002-07-31 | Corin Spinal Systems Ltd | A pedicle attachment assembly |
US6626908B2 (en) | 2000-07-22 | 2003-09-30 | Corin Spinal Systems Limited | Pedicle attachment assembly |
GB2365345A (en) * | 2000-07-22 | 2002-02-20 | Corin Spinal Systems Ltd | A pedicle attachment assembly |
US7841798B2 (en) | 2001-12-31 | 2010-11-30 | Synthes Usa, Llc | Device for a ball-and-socket type joint connection of two members |
WO2003059182A1 (en) | 2001-12-31 | 2003-07-24 | Synthes Ag Chur | Device for a ball-and-socket-type connection of two parts |
US7121755B2 (en) | 2001-12-31 | 2006-10-17 | Synthes (U.S.A.) | Device for a ball-and-socket joint type connection of two members |
WO2003068088A1 (en) * | 2002-02-13 | 2003-08-21 | Cross Medical Products, Inc. | Posterior polyaxial system for the spine |
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US10349983B2 (en) | 2003-05-22 | 2019-07-16 | Alphatec Spine, Inc. | Pivotal bone anchor assembly with biased bushing for pre-lock friction fit |
US8926670B2 (en) | 2003-06-18 | 2015-01-06 | Roger P. Jackson | Polyaxial bone screw assembly |
US8936623B2 (en) | 2003-06-18 | 2015-01-20 | Roger P. Jackson | Polyaxial bone screw assembly |
US9144444B2 (en) | 2003-06-18 | 2015-09-29 | Roger P Jackson | Polyaxial bone anchor with helical capture connection, insert and dual locking assembly |
USRE46431E1 (en) | 2003-06-18 | 2017-06-13 | Roger P Jackson | Polyaxial bone anchor with helical capture connection, insert and dual locking assembly |
EP1722700A4 (en) * | 2004-02-27 | 2008-05-21 | Custom Spine Inc | Biased angle polyaxial pedicle screw assembly |
US7763057B2 (en) | 2004-02-27 | 2010-07-27 | Custom Spine, Inc. | Biased angle polyaxial pedicle screw assembly |
US7819902B2 (en) | 2004-02-27 | 2010-10-26 | Custom Spine, Inc. | Medialised rod pedicle screw assembly |
US7862594B2 (en) | 2004-02-27 | 2011-01-04 | Custom Spine, Inc. | Polyaxial pedicle screw assembly |
EP1722700A2 (en) * | 2004-02-27 | 2006-11-22 | Custom Spine, Inc. | Biased angle polyaxial pedicle screw assembly |
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US8652178B2 (en) | 2004-02-27 | 2014-02-18 | Custom Spine, Inc. | Polyaxial pedicle screw assembly and method |
US9662143B2 (en) | 2004-02-27 | 2017-05-30 | Roger P Jackson | Dynamic fixation assemblies with inner core and outer coil-like member |
US8709051B2 (en) | 2004-08-27 | 2014-04-29 | Blackstone Medical, Inc. | Multi-axial connection system |
US9375236B2 (en) | 2004-08-27 | 2016-06-28 | Blackstone Medical, Inc. | Multi-axial connection system |
US8951290B2 (en) | 2004-08-27 | 2015-02-10 | Blackstone Medical, Inc. | Multi-axial connection system |
US9743957B2 (en) | 2004-11-10 | 2017-08-29 | Roger P. Jackson | Polyaxial bone screw with shank articulation pressure insert and method |
US8926672B2 (en) | 2004-11-10 | 2015-01-06 | Roger P. Jackson | Splay control closure for open bone anchor |
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US8998960B2 (en) | 2004-11-10 | 2015-04-07 | Roger P. Jackson | Polyaxial bone screw with helically wound capture connection |
US9522021B2 (en) | 2004-11-23 | 2016-12-20 | Roger P. Jackson | Polyaxial bone anchor with retainer with notch for mono-axial motion |
US9308027B2 (en) | 2005-05-27 | 2016-04-12 | Roger P Jackson | Polyaxial bone screw with shank articulation pressure insert and method |
US11234745B2 (en) | 2005-07-14 | 2022-02-01 | Roger P. Jackson | Polyaxial bone screw assembly with partially spherical screw head and twist in place pressure insert |
EP2308402A2 (en) | 2006-05-15 | 2011-04-13 | Biomet Spain Orthopaedics S.L. | Surgical screw system |
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JP2007307368A (en) * | 2006-05-15 | 2007-11-29 | Biomet Spain Orthopaedics Sl | Surgical screw system and its use |
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US9907574B2 (en) | 2008-08-01 | 2018-03-06 | Roger P. Jackson | Polyaxial bone anchors with pop-on shank, friction fit fully restrained retainer, insert and tool receiving features |
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Also Published As
Publication number | Publication date |
---|---|
CA2423973A1 (en) | 2001-04-05 |
US6540748B2 (en) | 2003-04-01 |
US20010001119A1 (en) | 2001-05-10 |
AU1493301A (en) | 2001-04-30 |
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